Caracterização de superfície de um novo implante dentário cerâmico

  • Mónica Célia Pereira Miranda (Student)

Student thesis: Master's Thesis


INTRODUCTION: With the evolution of techniques and biomaterials of oral rehabilitation and with the increasing demand from patients, the use of dental implants to replace lost teeth is increasing. The osseointegration of the implant depends upon the surface itself. In addition to the biofunctional aspects, aesthetic considerations began to gain relevance, and thus came the ceramic implants (eg zirconia) as an alternative to titanium implants. PURPOSE: To characterize the surface of titanium implants, titanium-zirconium and zirconia, already commercialized, investigating the relationship between characteristics such as chemical composition and crystallographic, wettability and roughness in the known results of osseointegration. MATERIALS AND METHODS: A Straumann Standard Plus SLA® implant tissue level of titanium, two implants Straumann SLA® Roxolid® Loxim™ titanium and zirconium (a level bone and tissue level), two Straumann zirconia implants Pure Ceramic ZLA™. The tests are: X-ray diffraction; optical profilometry; measurement of contact angle; scanning electron microscopy with energy dispersive X-ray spectrometry and artificial aging. RESULTS: In the X-ray diffraction analysis all implants have confirmed the existence of the base elements; the zirconia implant obtained lower roughness values on the rough area; the monoclinic fraction of zirconium oxide was superior to the tetragonal fraction before and after artificial aging; the zirconia implant on scanning electron microscopy showed fine and rounded grains. CONCLUSION: Association between the topographical micrometer aspect with the nanometer one; we observed the absence of oxide on the surface of titanium implant; it was found that the roughness of the zirconia implant is lower than the titanium and the titanium-zirconium implants, the last one have larger surface roughness values; after aging, it was found that the proportion of zirconium oxide in the monoclinic phase increased and remained above the proportion of tetragonal phase
Date of Award29 Jul 2015
Original languagePortuguese
Awarding Institution
  • Universidade Católica Portuguesa
SupervisorTiago Marques (Supervisor) & Filipe Miguel Araújo (Co-Supervisor)


  • Ceramic
  • Dental implant
  • Zirconia
  • Titanium
  • Surface characterization


  • Mestrado em Medicina Dentária

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